) on a physical Symbian handset. This tool scrapes the system partitions and compiles them into the RPKG format. Installation
hstsethi/awesome-symbian: An Awesome List about ... - GitHub symbian rom rpkg
If a Symbian device displayed the dreaded "Phone start-up failed. Contact retailer" error, the RPKG was the solution. Using a hardware flasher (JAF, Box, or Phoenix) with a clean RPKG, you could force-write a new ROM to the device, bypassing software corruption. ) on a physical Symbian handset
contains downloadable RPKG and ROM images for popular devices like the Nokia 5320, 5800, and N-Gage. Emulator Wikis: EKA2L1 Wiki or Phoenix) with a clean RPKG
Real devices are protected against unsigned code, making true custom ROM development (outside of "ROM shadowing" or "patching") difficult.